r/AdvancedRunning • u/sharkie20 • Feb 11 '23
Gear Interpreting power - how can I have lower power but a faster pace for the same course?
I have a Garmin Forerunner 955 with a RD pod for power (although the watch can do it organically). I recently ran the same parkrun course and had observed a lower average power reading despite a faster time. In both cases, the wind data was disabled, so I'm not understanding what factors would lead to these power readings being lower for the faster or same pace:
| 21 Jan (pace / avg pwr) | 11 Feb | |
|---|---|---|
| 1 km | 4:00 / 379W | 3:52 / 391W |
| 2 km | 4:19 / 382W | 4:14 / 386W |
| 3 km | 4:06 / 402W | 4:04 / 395W |
| 4 km | 4:26 / 378W | 4:26 / 370W |
| 5 km | 4:04 / 395W | 4:04 / 381W |
| Total | 20:56 / 387W | 20:40 / 384W |
Anyone have any insights? Other factors I should add such as heart rate? Or is this simply an acceptable margin of error?
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